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Basis of Presentation and Principles of Consolidation	9 Months Ended
	Sep. 28, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation Background MasterBrand, Inc. is a leading manufacturer of residential cabinets in North America with a portfolio of leading residential cabinetry products for the kitchen, bathroom and other parts of the home. References to “MasterBrand,” “the Company,” “we,” “our” and “us” refer to MasterBrand, Inc. and its consolidated subsidiaries, unless the context otherwise requires. Basis of Presentation Our consolidated financial statements are based on a 52- or 53-week fiscal year ending on the last Sunday in December in each calendar year. Our fiscal 2025 and 2024 consist of 52 weeks ending on December 28, 2025 and December 29, 2024, respectively. The condensed consolidated balance sheets as of September 28, 2025, as well as the related condensed consolidated statements of income, comprehensive income, cash flows and equity for the thirteen and thirty-nine weeks ended September 28, 2025 and the thirteen and thirty-nine weeks ended September 29, 2024 are unaudited. The presentation of these financial statements requires us to make estimates and assumptions that affect reported amounts and related disclosures. Actual results could differ from those estimates. In the opinion of management, all adjustments, consisting of normal, recurring accruals, considered necessary for a fair statement of the financial statements have been included. Interim results may not be indicative of results for a full year. The condensed consolidated financial statements and notes are presented pursuant to the rules and regulations of the Securities and Exchange Commission and do not contain certain information included in our audited consolidated financial statements and notes. The 2024 condensed consolidated balance sheet was derived from our audited consolidated financial statements, but does not include all disclosures required by United States Generally Accepted Accounting Principles (“GAAP”). These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the fiscal year ended December 29, 2024.

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- Definition

The entire disclosure for the basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483426/235-10-50-4

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